Cross beam rotor

Details Cross beam rotor Cross beam rotor

1976-12-15

1978-06-06

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Plural articulation

416134A, B64C 2738

Patent

active

040934004

ABSTRACT:
A helicopter rotor having flexible blades mounted to a drive shaft by means of hub arms, wherein opposing blade members are interconnected by a common spar passing across the rotor axis. The spar members are supported from the hub arms by spherical bearing members. The universal freedom of these bearing members provides torsional freedom for blade pitching motions without restricting blade flapping or in-plane bending.

REFERENCES:
patent: 2830669 (1958-04-01), Klockner
patent: 2949967 (1960-08-01), Jovanovich
patent: 3193019 (1965-07-01), Drees et al.
patent: 3874815 (1975-04-01), Baskin
patent: 3880551 (1975-04-01), Kisovec
patent: 3999887 (1976-12-01), McGuire
patent: 4008980 (1977-02-01), Noehren et al.

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